If your GP has prescribed you with medication, it will help.
Have a positive outlook and try to not let the diagnosis affect you - easier said than done, but the right mindset is a big thing in all forms of mental illness. If you're determined to not let it affect you, and to lead as "normal" a life as possible, even if that means you've got to take pills for the rest of your life, then you stand as good a chance as the next person of having that normal life.
And if you think "but I don't want to take pills", think of it as being an illness like diabetes or high blood pressure. If you don't take the medication for either of those, you stand a very real risk of dying, and to a certain extent depression is the same, whether that's a physical death or just the death of a social life. I think my mother has finally worked that out, after 15 or so years of taking anti-depressants and several attempts to come off them, without any success.
Good luck & God bless.